Inverse Proportion


 Topic: Inverse Proportion
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  Posted on November 25, 2012 23:26
gerronix11
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#1
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Please help. So far I got,

T=142.9 x 1/square root of m

I don't know how on earth should I turn it to what it says on question a, so I've probably done something wrong.. Here's what I did,

T=K x 1/square root of m

Substitution:

20=K x 1/square root of 50

20=K x 0.14

(divide both sides by 0.14)

142.9=K

Equation:

T=142.9 x 1/square root of m

what now?
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  Posted on November 25, 2012 23:29
HyorinmaruIce
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#2
This is what you do:

flip_over_desk.jpg?w=594
  Posted on November 25, 2012 23:31
gerronix11
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#3
HyorinmaruIce wrote:
This is what you do:

flip_over_desk.jpg?w=594

I'm not working on a table XD...
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  Posted on November 25, 2012 23:31
itachikiller_023
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#4
i'm not that advanced at math. sorry can't help,
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  Posted on November 25, 2012 23:32
HyorinmaruIce
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#5
gerronix11 wrote:
HyorinmaruIce wrote:
This is what you do:

flip_over_desk.jpg?w=594

I'm not working on a table XD...
Well then I am terribly sorry, I suck at math :(
  Posted on November 25, 2012 23:44
Gohan1233
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#6
I'm pro at math but sorry i'm just 12 years old but I know 14 years old math
I'm back lorh~ :smile
  Posted on November 25, 2012 23:46
fgopl
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#7
Gohan1233 wrote:
I'm pro at math but sorry i'm just 12 years old but I know 14 years old math
Pssh, I'm 13 and doing Calculus. Still, I have no idea what in the world an inverse proportion is, so it doesn't even matter. XD
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  Posted on November 26, 2012 00:06
pradeepmittal2
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#8
You have already got the answer lols

100* root(2)=100*1.414=141.4
which is the value of k
You needed the equation T=141.4/root(m)

Edit: If you had calculated 20 * root(50) by a calculator u wud have got 141.42 as the value of K
And for answer of part B,simply put T=15 sec in the equation and u already know the value of K so u can easily calculate m :amused
Edit 2 Answer for part b is 88.88 :amused